Piston salvaging device



Aug. 30, 1932. F. J. LEEAK PISTON SALVAGING DEVICE Filed Nov. 7, 1951ltwentor Fhmcis J L eeak 3g MAJW Gttorneg Patented Aug. 30, 1932 UNITEDSTATES more I. max, or mains, MICHIGAN rm'ron envaenze mwrcn Applicationfiled November '2, 1931. Serial No. 573,638. y

This invention relates to piston accessories for internal combustionengines, steam engines, air compressors and the like and has or itsob'ect' an accessory in. the nature of a piston saivaging device wherebythe diameter of the-piston may be increased in size to conform to thewear or reboring of the cylinder at no great expense to the owner. Afurther object is to provide an accessory for this purpose that issimple to install and easy to replace. A further object is to increasethe wearing properties of the piston, for as the preferred form is to beconstructed of brass, it is well known by those skilled in the art thatbrass agains'tsteel or a soft metal against a hard metalhas'much longerwearing qualities than two hard. metals one against the other. y

These and other objectswill be more clearly brought out in the drawing,Specification and claims. I

In the acc'ompanyingdrawing, which illustrates the invention, thecharacters indicate like. parts throughout the several views.

Referring to the drawing:

Fig. 1 is asideelevationof a piston embodying mpgpresentrinvention.

Fig. 2 isii'horizontal transverse sectional view taken on line 2-2 ofFig. 1 illustrating the application of the device.

Fig. 3 is a sectional view of the piston taken on line 3-3 of Fig. 1 andFig. 2 illustrating the mannerof turning the upper and lower ends of thedevice to eliminate shar edges from coming in contact with the wal s ofthe cylinder. 7

Fig. 4 is a perspective view of the device showmg the anchor holes andone shape the device may take, such as tapered sides.

Fig. 5 is a perspective view of a modification of the invention havinstraight sides.

Referring. to the drawing, numeral 1 is used to designate my inventionas a piston saving device which ma be ap lied to any of the present makeof pistons. ts construction is a sheet of metal (preferably brass) ofthe desiredthickness and shape in which there area plurality ofcountersunk ortions 2 in which there are holes 3 thnoug which rivets 4may pass. 1

Holes 6 are drilled and countersunk, into p1ston5 in position tocorrespond with those in my invention through which rivets 4 may pass.These rivets are then clinched to hold the device firmly in place. Afterthe rivets 4 have been properly clinched on the inside of saidpiston 5the top and bottom of said device 1 are turned over as shown at 7 and 8thus making it more rigid and at the same time protecting the walls ofthe cylinder from sharp edges.

With the foregoing description it will be readily understood that thisdevice is an accessory to be used to reduce the play between the pistonsand cylinders caused from wear or reboring of the cylinder. 7

Its shape and thickness depends on the shape of t 0 piston andcorresponding size of the cylinder. It may be applied to one or bothsides of the piston and may be secured thereto by rivets, screws, orbolts. The object is toprovide-ian accessory to rebuild one or bothsides of. a pistonto take up the play between said piston and thecylinder walls dueto wear, grinding or reboring of the cylinder. Torestore old pistons to their original diameter.

It will also be understood that my preferred form of this device willnot score the cylinder 0n the side the device is applied.

Having now described my invention what I claim as new and novel is i 1.In combination with a cylinder and cooperating piston therein, a pistonsalvaging device consisting of a thin sheet of metal having a pluralityof countersunk portions said portions having transverse openings attheir apex by means of which the device is securely fastened to thepiston.

2. In combination with a cylinder and cooperating piston therein, apiston salvaging device consisting of a thin sheet of metal having aplurality of countersunk portions, said portions having transverseopenings at their apex, said piston being provided with a plurality ofcountersunk holes with transverse openings at their apex to correspondwith those in the salvaging device in which rivets,

screws, or bolts are inserted to securely'ancho'r 10' said salvagingdevice to the skirt of the piston. I v 3.- In combination with a clinder and cooperating iston therein a piston salva g device conslstingof a thin sheet of metal aving .a plurality of countersunk portions,said portions having transverse openings at their apex, said pistonbeing provided with a plurality of countersunk holes with transverse onings at their apex" to correspond with t ose in the salvaging device inwhich rivets, screws, or bolts are inserted to securely anchor saidsalvaging device to the skirt of the, pis ton, said salvaging devicehaving top and bottom edges turned in toward the center of the piston topresent 'a' rounded edge toward the walls of the cylinder substantiallyas shownin Fig. 3.

I a "FRANCISIJ." VEYE'AK. 3

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In testimony whereof,'I aflixfm signature.

